Observing the extensive destruction left behind by some recent earthquakes (e.g., Central Italy 2016-2017 and Turkey-Syria 2023) it is reasonable to ask if repair is the most sustainable option or weather reconstruction is to be considered in some cases. Once this alternative is picked, concerns related to the compatibility between safety and aesthetics arise, especially in historic centres, where fair face appearance of masonry façades represents an invaluable architectural asset. This paper presents an innovative technology for the reconstruction of masonry walls consisting of a two-leaf structure. A reinforced clay masonry, compliant, per se, with building code requirements and provided with high thermal performances, is the internal leaf and is connected to an external leaf built with fair face stone masonry. This solution would restore the architectural consistency with pre-existing structures while ensuring much higher seismic resistance than original rubblestone walls. It is also sustainable as rubble stones recovered from debris might be used to build the front leaf, avoiding their disposal and the supply of new materials. A key element is the glass fibre reinforced polymer (GFRP) mesh, which provides connection and prevents the disintegration of rubble masonry. An extensive experimental investigation was carried out at different scales. Preliminary laboratory tests were performed to characterize the mortars adopted for the brickwork, the mesh, and the connection system. Then, shake table tests were carried out on a full-scale wall prototype under natural seismic signals, with gradually increasing peak ground acceleration. The main results are shown in terms of displacement profiles and observed crack pattern, which testify that the wall specimen, even under the most severe actions, did not suffer any critical damage, proving the possibility to be implemented for reconstruction in highly seismic prone areas.
Sangirardi, M., De Santis, S., Mosele, F., Dudine, A., Roselli, I., Liberatore, D., et al. (2024). Shake table tests of a novel seIsmic-resistant technology for fair face masonry reconstruction. In Proceedings of 18th WCEE World Conference on Earthquake Engineering.
Shake table tests of a novel seIsmic-resistant technology for fair face masonry reconstruction
Sangirardi M;De Santis S
;de Felice G.
2024-01-01
Abstract
Observing the extensive destruction left behind by some recent earthquakes (e.g., Central Italy 2016-2017 and Turkey-Syria 2023) it is reasonable to ask if repair is the most sustainable option or weather reconstruction is to be considered in some cases. Once this alternative is picked, concerns related to the compatibility between safety and aesthetics arise, especially in historic centres, where fair face appearance of masonry façades represents an invaluable architectural asset. This paper presents an innovative technology for the reconstruction of masonry walls consisting of a two-leaf structure. A reinforced clay masonry, compliant, per se, with building code requirements and provided with high thermal performances, is the internal leaf and is connected to an external leaf built with fair face stone masonry. This solution would restore the architectural consistency with pre-existing structures while ensuring much higher seismic resistance than original rubblestone walls. It is also sustainable as rubble stones recovered from debris might be used to build the front leaf, avoiding their disposal and the supply of new materials. A key element is the glass fibre reinforced polymer (GFRP) mesh, which provides connection and prevents the disintegration of rubble masonry. An extensive experimental investigation was carried out at different scales. Preliminary laboratory tests were performed to characterize the mortars adopted for the brickwork, the mesh, and the connection system. Then, shake table tests were carried out on a full-scale wall prototype under natural seismic signals, with gradually increasing peak ground acceleration. The main results are shown in terms of displacement profiles and observed crack pattern, which testify that the wall specimen, even under the most severe actions, did not suffer any critical damage, proving the possibility to be implemented for reconstruction in highly seismic prone areas.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
